Sparking plug for hydrocarbon-motors.



- A. A. LOW. SPARKING PLUG 'PoR HYDROGARBON MOTORS.

ArPLIoATIoN rILED Immo. 1909.

l Patented July 6, 1909.

hlllNlllEl) STATES inner 'Ueusrus Ldvv, or

Sramana PLUG non ntrnnocannoN-Moroas. i

To all whom it 'may concern: l l

lle it known that LAnornueusrusLoW,

a. citizen ol' the United States, residing at Horseshoe, St. Lawrencecountyand"St`ate o i' New York, haveinvented 'certain-new' and usefulImprovements in Sparlaing Plugs'for Hydiocaihoii-Motois, of whichthe-following? yis a specification. f f

ol my invention is to ohviate the diffu ,ilties and delay heretoforeattendmounted upon a guiding threadin said sleeve the plug l` with theguide sleeve whereby the plug is centralized with relation to thebushing, so that it may he quickly and conveniently inserted therein forthe purpose and substantially in the manner hereinafter set forth,-tlieinvention eonsistinglin the specific construction and `arrangement ofparts described vand claimed.

ln the accompanying drawings, Figure l,

is a central vertical sectional elevation shoW-' ing a spark plug ments,ther vlug place in the showing the lplug Withdrawn from the hushing;Fig.` 3, is an elevationof tlieouter end oi provided with my guidesleeve.

C, represents the inner side of the combustion chamber of a hydrocarbon.motor ol' any ordinary the .Water jacket surrounding the same. TheWallsrw, w, ol the water jacket W, are tapped to receive 7oushing B,having an external flange' l, the periphery With a male screw threadl1', for-engagement vviththe female screw s, on the innere/nd of thecylindrical guide sleeve-S. The cylindrical sleeve S, is also formedwith the internal guide screw thread ..9, for engagement with a malevscrew thread p, formed upon the periphery ol' the flange p, ol the sparkplug l), which latter may loe of any ordinary or Well knownconstruction, having the facets p, lor engagement with a key wrench.Between the threads sand s, is a space s2, in the sleeve S, whichcommunicates with the at provided With my improveu enig shown asinserted in inosphcre through holes or perlorations S3.

The sparhing plug' l), is delivered l'or use S, attached to it, theplug' honig in the retracted position with relai Speccatibn of LettersPatent, i Application ledflreliuary, l, Eteral No. 479,160.

- Stien to-tlie indicated in ,Fi

ly or after 'it has been reguide sleeve upon` Aaushing; Fig. 2, is asimilar view or desired construetiom-VV being oi which is formed PATENT"OFFICE- f nonsnsiion, NEW YORK. i

Patented '.iruiy 6, iaoa.

vIn ,applying gtliew plug for use theV s evejis' j screwed Sor`otherwise secured to thel liang 5,.' of fthe hashing "B, whichloi-ings' the screw thread p?, `on :the plug into perfect alineirient, lthe female screw thread t, in thefbushf, y ing }B,-'th'e female guidescrejvv thread s', inwV the cylindrical 'sleeve S, acting to guide and;"centralize the plug with accuracy so'tliatit may hequiclrly andconveniently-inserted or Withdrawn fromaposition in the bushing by theuse of an ordinary keyv'vrench. The two-f l positions are illustrated inFigs. 1 .and 2,'of the drawings, in which Fig. 2f, represents theposition of thefplug either before its initial in'- sertion or alter ithas heen Withdrawn for the purpose of cleaning,1in which latter casethe" holes s3, perform the function of hlovv `out holes. l

The discharge `from the cylinder C, oiV the ,i air and gases underpressure through the,

s ace s?, and lioless, in the guide-sleeveS,

c sans the, plug 'and removes all moisture, 3 soot or sediment that mayhave collected thereon, the holes s3, not only admittingof this`action,hut also affording means for ad-,l

mission of a cleansing inrusli'of pure, clean air after the internalpressure is exhaust-ed.

By my improved construction and arrangement of parts the delay anddifficulty heretofore involved in alining the plug and effecting aproper engagement of the `male and female screw threads is ohviated;While thev plug may be eilectually cleaned Without removing it fromposition, in one sense'of the word, since it is onlv necessary towithdraw it from the bushing, While still retaining it in its positionin the guide sleeve S, and .in alineinent 'with said hushin g in orderto elleet this result. What l claim as my invention and desire to securehy Letters Patent is, i l. In. adeviceof the character designated, thecombination of an externally threaded bushing engaging With andextending through the Wall of a combustion chamberand formed with aninternal screwV thread fior engagement with a male thread on the sparkplug, a guido sleeve attached to said bushing and formedA4 with aninternal guide screw thread, and a spark plug formed with the. malescrew thread for engagement with the female sc'reiv thread in the saidbushing and with a concentric flange thread peripherallylor engage nientwith the screw thread in the guide sleeve, whereby the threadedv lowerportion ioo fu, l

u .l n edevlee el? the ehm-:Mil the Combinationel "u ek` bushingengaging "y ll1 mld extend i1v f the, Well of a eembusti on chamber :me-e'med with :m intel-nel eezew theed fier enga gemelli withamelelinea/lol; :zsperl plug, e guide' ySlo/eye at'mehedte sal-a buslung andformed with im luernal guide sex'ew thread eid.

.bushl nf a spm'kplug formed with. the male sere-VW thread ferengagement with the' female screw tlm-eed nl the sm'd'buslung and Wlth acon-- cent-11e. flange threaded pempnemlly fol' engagement with thescrew 'thread in 'i-he guide eleeve, whereby the tlnjeeded lower potonof the spark. lug le eentmlzed for engegef ment Wil' 1 The female sere-Wtljreml'u the seifl with helesmeer its inner en@ for the purposedesclbecl In ede-vie@ 'olf elle eh'zwleeter designated,

tllevcomblmon'of an externally ilueerled' bushing` engaging th andeftendn through the 'well el: a e(wmbuemenellember and lmrmed with e.mele thread en the Spark plug, smal.

bushing; being :Lise formed Awith en external periphelellyll'u'eededllenge, e rguide sleeve termed with :L lemele srew threadengegmg ,the said peafipllemlly'threaded flange en. the f bushing' andalso formed with. aux. internal gulfle screw thi-eed, .und :L spark plugleunen! Awill the male screw thread ier engagement jernellj," threaded llnfough nl guxe Sleewelaeing also, formed' ing mld W with the femalescrew' ll'lead in t'he sgml lbushmg and with :L eeueen'trlelmlge tl11i-:meal

' pexphemlljf for engagement-Wlx alle s few n geule thread m the sleeve,whereby "alle 'threaded lower pol'tlol of *the spark" plug 1s Ycentralized for engfigement' with the female A screw tllead in thebushing0 for alle p Lupese described. l l

4. In a device of the ehemctei clesgnelaed, "the cembinateu of amebilelmlly threaded bushing engaging with and extending l lumlgh ltheWallef a Combustion chmiem-end'formed with 'im internal eeleW bljueec ljolj engage- 111mm with .e mele threefl 011 the spark plug, sgml bushingbeing else formed will! :m @Klei-mil bushing :md also formed with aufimemml Wtly'tlle mele seu-mf thread ler engegevwm 'guide eelmx ihren-d,mid a spark plug lk'nmefl

